On 18 CDs (yes, eighteen!) you'll find all the A and B sides of all the Pink Floyd singles, all the promo, edited, obscured, or remixed versions, and all the soundtracks bits of your favorite Pink Floyd and solo tracks. Basically, this collection includes (nearly) all songs officially released, but not on regular album (compilations, singles, promos, soundtracks...), as well as rare versions from acetates and studio outtakes. We didn't consider live tracks (concerts, radio or TV appearances), unless they're part of a single or a promo single. We also left out of this scope the Syd Barrett solo rarities, because it mainly consists in slightly different mixes of regular versions (we'd like to let a more hardcore fan than we are, doing the job). Some other things are not included, mainly because they could be treed separately, as a whole entity: "Live At Pompeii" and "The Wall" soundtracks, mono editions of albums ("The Piper At The Gates Of Dawn", "A Saucerful Of Secrets"), quadraphonic editions of albums ("Atom Heart Mother", "The Dark Side Of The Moon", "Wish You Were Here")... There are in fact 17 audio CDs and one data CD. This latter CD contains all the artworks and booklets (with all you ever dreamt to know about each track of each CD!), and some bonus files (that we hope you'll enjoy) while keeping the secret about their contents. We tried to make the most definitive Pink Floyd rarities compilation, in both completeness and sound quality.